Dialkylation of Indoles with Trichloroacetimidates to Access 3,3-Disubstituted Indolenines
作者:Tamie Suzuki、Nilamber A. Mate、Arijit A. Adhikari、John D. Chisholm
DOI:10.3390/molecules24224143
日期:——
2-Substituted indoles may be directly transformed to 3,3-dialkyl indolenines with trichloroacetimidate electrophiles and the Lewis acid TMSOTf. These reactions provide rapid access to complex indolenines which are present in a variety of complex natural products and medicinally relevant small molecule structures. This method provides an alternative to the use of transition metal catalysis. The indolenines
Palladium-Catalyzed Decarboxylative Allylation and Benzylation of <i>N</i>-Alloc and <i>N</i>-Cbz Indoles
作者:Thomas D. Montgomery、Ye Zhu、Natsuko Kagawa、Viresh H. Rawal
DOI:10.1021/ol400334u
日期:2013.3.1
for the palladium-catalyzeddecarboxylative C3-allylation and C3-benzylation of indoles, starting from the corresponding N-alloc and N-Cbz indoles, respectively, is reported. This chemistry provides ready access to a wide range of functionalized indolenines in good to excellent yields. A tandem process, wherein the palladium catalyzed allylation chemistry is coupled with a Mizoroki–Heck reaction, offers